update readme

Author: joshuadavidthomas

README.md

@@ -107,6 +107,7 @@ django-bird offers features for creating flexible components, such as:
 - Passing [attributes and properties](https://django-bird.readthedocs.io/en/latest/params.html) to components
 - [Named slots](https://django-bird.readthedocs.io/en/latest/slots.html#named-slots) for organizing content within components
 - [Subcomponents](https://django-bird.readthedocs.io/en/latest/organization.html) for building complex component structures
+- Automatic [asset management](https://django-bird.readthedocs.io/en/latest/assets.html) for component CSS and JavaScript files
 
 For a full overview of the features and configuration options, please refer to the [documentation](https://django-bird.readthedocs.io).